Tony, Awesome, this makes SMP kernel work on my omap3 board. Thanks a lot. I will test the same kernel on my omap4 one. -Bryan. On Thu, Sep 9, 2010 at 4:26 AM, Tony Lindgren <tony@xxxxxxxxxxx> wrote: > * Tony Lindgren <tony@xxxxxxxxxxx> [100907 20:19]: >> * Bryan Wu <bryan.wu@xxxxxxxxxxxxx> [100906 03:09]: >> > Tony, >> > >> > I tried your latest branch: devel-smp-on-unicore, kernel boots up but >> > got lots of WARN_ON fired: >> > >> > --- >> > ------------[ cut here ]------------ >> > [ 1.149719] WARNING: at mm/percpu-vm.c:320 pcpu_alloc+0x2fc/0x888() >> > [ 1.149780] Modules linked in: >> > [ 1.149841] [<c01b34c8>] (unwind_backtrace+0x0/0xe4) from >> > [<c01e939c>] (warn_slowpath_common+0x4c/0x64) >> > [ 1.149902] [<c01e939c>] (warn_slowpath_common+0x4c/0x64) from >> > [<c01e93cc>] (warn_slowpath_null+0x18/0x1c) >> > [ 1.149993] [<c01e93cc>] (warn_slowpath_null+0x18/0x1c) from >> > [<c0274730>] (pcpu_alloc+0x2fc/0x888) >> > [ 1.150085] [<c0274730>] (pcpu_alloc+0x2fc/0x888) from [<c0279578>] >> > (sget+0x198/0x43c) >> > [ 1.150146] [<c0279578>] (sget+0x198/0x43c) from [<c0279adc>] >> > (get_sb_ns+0x20/0x90) >> > [ 1.150238] [<c0279adc>] (get_sb_ns+0x20/0x90) from [<c02791a4>] >> > (vfs_kern_mount+0x9c/0x18c) >> > [ 1.150299] [<c02791a4>] (vfs_kern_mount+0x9c/0x18c) from >> > [<c0022280>] (init_mqueue_fs+0x68/0xc8) >> > [ 1.150390] [<c0022280>] (init_mqueue_fs+0x68/0xc8) from >> > [<c01ac5d0>] (do_one_initcall+0xcc/0x1a4) >> > [ 1.150451] [<c01ac5d0>] (do_one_initcall+0xcc/0x1a4) from >> > [<c0008760>] (kernel_init+0x148/0x210) >> > [ 1.150543] [<c0008760>] (kernel_init+0x148/0x210) from >> > [<c01adcf8>] (kernel_thread_exit+0x0/0x8) >> > [ 1.150604] ---[ end trace 1b75b31a2719ed74 ]--- >> > --- >> > >> > It looks like we still missed to set some flag for chuck. >> >> Yeah I think there's some .config option that needs to be handled >> properly to fix this. > > This seems to disappear when CONFIG_LOCK_STAT is disabled, > I wonder why? > > Here are my current changes to omap3_defconfig that I use for testing. > > Tony > --- a/arch/arm/configs/omap3_defconfig > +++ b/arch/arm/configs/omap3_defconfig > @@ -55,6 +55,7 @@ CONFIG_MACH_OMAP_4430SDP=y > CONFIG_ARM_THUMBEE=y > CONFIG_NO_HZ=y > CONFIG_HIGH_RES_TIMERS=y > +CONFIG_SMP=y > CONFIG_AEABI=y > CONFIG_LEDS=y > CONFIG_ZBOOT_ROM_TEXT=0x0 > @@ -218,9 +219,9 @@ CONFIG_USB_DEVICEFS=y > CONFIG_USB_SUSPEND=y > # CONFIG_USB_OTG_WHITELIST is not set > CONFIG_USB_MON=y > -CONFIG_USB_MUSB_HDRC=y > -CONFIG_USB_MUSB_OTG=y > -CONFIG_USB_GADGET_MUSB_HDRC=y > +# CONFIG_USB_MUSB_HDRC is not set > +# CONFIG_USB_MUSB_OTG is not set > +# CONFIG_USB_GADGET_MUSB_HDRC is not set > CONFIG_USB_MUSB_DEBUG=y > CONFIG_USB_WDM=y > CONFIG_USB_STORAGE=y > @@ -276,7 +277,7 @@ CONFIG_DEBUG_KERNEL=y > CONFIG_SCHEDSTATS=y > CONFIG_TIMER_STATS=y > CONFIG_PROVE_LOCKING=y > -CONFIG_LOCK_STAT=y > +# CONFIG_LOCK_STAT is not set > CONFIG_DEBUG_SPINLOCK_SLEEP=y > # CONFIG_DEBUG_BUGVERBOSE is not set > CONFIG_DEBUG_INFO=y > -- Bryan Wu <bryan.wu@xxxxxxxxxxxxx> Kernel Developer +86.138-1617-6545 Mobile Ubuntu Kernel Team Canonical Ltd. www.canonical.com Ubuntu - Linux for human beings | www.ubuntu.com -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
